What is one of the functions of water-dispersable granules (WDG)?

Water-dispersable granules (WDG) serve multiple functions in the application of pesticides, one of which is to reduce the risk of inhalation exposure. This formulation type is designed to dissolve in water, creating a suspension that can be applied with a sprayer. Because the granules dissolve in water and are typically applied as a liquid, they minimize the amount of airborne particles that could be inhaled during application. This is particularly important for ensuring the safety of the applicator and those nearby, as it limits respiratory exposure to potentially harmful chemicals.

In contrast, increasing evaporation rates of pesticides does not align with the intended use of WDG, as they are designed to be effective in their dissolved state, not susceptible to rapid evaporation. Additionally, enhancing chemical reactions in the soil typically involves formulations that stay in the soil longer, not those that disperse in water. Lastly, promoting runoff during rainfall would indicate inefficiency in retaining the pesticide where it's needed, which is not the purpose of WDG. Thus, the primary function of water-dispersable granules in reducing inhalation exposure helps ensure the safe and effective application of pesticide products.